tb6539fg TOSHIBA Semiconductor CORPORATION, tb6539fg Datasheet - Page 15

• Manufacturer Part Number: tb6539fg
• Description: 3-phase Full-wave Sine-wave Pwm Brushless Motor Control
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Operating Waveform When Driven by Sine-Wave PWM
Generation inside of IC
Output waveform
Inter-line voltage
Note: The motor is driven by a sine wave if REV = High-Z, i.e., if the Hall signals at start-up are 5 Hz (fosc = 4 MHz)
When driven by a sine wave, the motor is accelerated or decelerated according to the On duty of T
when the amplitude of the modulation symbol changes by voltage V
page 11).
Phase W
Phase U
Phase V
or higher and the motor is rotating in the same direction as that of the TB6551F/FG setting.
(W-U)
(V-W)
V
(U-V)
V
V
WU
VW
UV
W
U
V
Y
X
Z
Triangular wave frequency = carrier frequency = f
Modulation signal
15
osc
/252 (Hz)
(CW/CCW = Low, OS = High)
Triangular wave (carrier frequency)
e
(see the diagram of output On duty on
TB6539N/NG/F/FG
2007-07-17
ONU